percent of change percents show the formula?

Question

24 to 21
64 to 80
100 to 113
50 to 41
63 to 105
42 to 168
80 to 24
200 to 158

Answer 1

% change = {(final no. - initial no.) / initial no.} X 100
If this no. is +ve then, the change is increase and -ve then it is decrease.

{(21 - 24)/24} x 100 = -12.5 = 12.5 % decrease (- sign means decrease)
{(80 - 64)/64} x 100 = 25 = 25 % increase (+ sign means increase)
{(113 - 100)/100} x 100 = 13 % increase
{(41 - 50)/50} x 100 = 18 % decrease
{(105 - 63)/63} x 100 = 66.67 % increase
{(168 - 42)/42} x 100 = 300 % increase
{(24 - 80)/80} x 100 = 70 % increase
{(158 - 200)/200} x 100 = 21 % decrease

Answer 2

1.
24-21/24 x 100%
= 3/24 x 100%
= 1/8 x 100%
= 100/8 %
= 12.5%

2.
80-64/64 x 100%
= 16/64 x 100%
= 1/4 x 100%
= 100/4 %
= 25%

3.
113-100/100 x 100%
= 13/100 x 100%
= 13000/100 %
= 13%

4.
50-41/50 x 100%
= 9/50 x 100%
= 900/50 %
= 18%

5.
105-63/63 x 100%
= 42/63 x 100%
= 2/3 x 100%
= 200/3 %
= 66 2/3 %

6.
168-42/42 x 100%
= 126/42 x 100%
= 3 x 100%
= 300%

7.
80-24/80 x 100%
= 56/80 x 100%
= 7/10 x 100%
= 700/10 %
= 70%

8.
200-158/200 x 100%
= 42/200 x 100%
= 4200/200 %
= 21%

Answer 3

Hello there,

The formula would be :

Percent Change = (Second Number/First Number) x 100%

So I will do the first three examples for you:

1. 24 to 21

Percent Change = 21/24 x 100%

= 0.875 x 100%

= 87.5%

2. 64 to 80

Percent Change = 80/64 x 100%

= 125%


3. 100 to 113

Percent Change = 113/100 x 100%

= 113%

Hope this helps. Write back for more help.

Answer 4

Here's how to find the percentage of change.

Example: 200 to 158.
What's the start value? 200.
What's the finish value? 158.
The actual change from start to finish: 158-200 = -42.
The PERCENTAGE change: Divide actual change by 200. Why 200? Because it's the starting value. It's the basis of comparison. (think Basis...base...denominator...divide by ...)
So the percentage change is -42/200 = -21/100 = 21%

Answer 5

For Percentage changes (Works for Increases and Decreases)

Let Start Number = S
Let End Number = E
For increase subtract Start No. from End No.
For decrease subtract End No. from Start No.

So in your 1st example:-

[{E - S} / S] x 100

[(24 - 21)/ 24] x 100
= 12.5%

2)
[{E - S} / S] x 100
[{80 - 64} / 80] x 100
= 20%

And so on !!!
Hope this helps :-)

Answer 6

you should do your own homework :P
all the best